Combination check and cut-off valve



G. A. HiDDEN. COMBINATION CHECK AND GUT-OFF VALVE.

62 age A hidden UNITED STATES GEORGE A. HIDDEN,

or cono'mmo, CALIFORNIA.

COMBINATION CHECK AND CUT-OFF VALVE.

To all whom it may c oncem:

Be it known that I, GEORGE A. HIDDEN, a citizen of the United States, residing at Coronado, in the county of San Diego and State of California, have invented new and useful Improvements in Combination Check and Cut-OH Valves, of which the following is a specification.

y object is to make a combination check and cut-ofl" valve, and my invention consists of the novel features herein shown, described and claimed.

Figure 1 is a sectional elevation showing a straight vertical check valve provided With cut-01f means in accordance with the principles of my invention.

Fig. 2 is a top plan view of the check member of the valve construction shown in F i 2 and as seen looking in the direction indicated by the arrow 3 in Fig. 4.

Fig. 3 is a vertical diametrical sectional detail on the line 44 of Fig. 3.

Fig. 4 is a bottom plan view looking in the direction indicated by the arrow 5 in Fig. 4.

The check valve casing 24 has a central portion 25 having a chamber 26, a port wall 27 in the chamber 26, and internally screw threaded nipples 28 and 29 extending from the opposite ends of the portion 25. The port 30 in the port wall 27 is vertical, that is at right angles to the axes of the nipples 28 and 29.

The vertical check valve 31 comprises a guide stem 32, a screw threaded shank 33 extending downwardly from the guide stem, a guide head 34 extending downwardly from the shank 33, a gasket 35 fitting against the head 34, and a circular plate 36 screwed down upon the shank 33 against the gasket 35. The upper face 37 of the port wall 27 is finished around the port 30.

hen the check valve construction is incorporated into a pipe line in a horizontal position with the check valve 31 in a vertical position the check valve will rise when liquid flows in the direction indicated by the arrow 38 and will fall when the direction of flow is reversed.

For the purpose of holding the check valve closed to make a positive cut-off, I provide the cut-off mechanism 39.

An internally screw threaded nipple .40 leads downwardly to the chamber 26, a valve stem casing 41 is screwed down into the nipple 40 and has a chamber 42, and a bearing portion 43 extending downwardly from the Specification of Letters Patent. Application filed April 21, 1919.

Patented June 28, 1921. Serial No. 291,742.

chamber 42' around the guide stem 32. A valve stem 44 is screw seated in the casing 41 with the point 45 of gaging in the of the guide stem 32, and a stufiing c eck valve and make a positive cut olf the handwheel 48 upon the upper end of the valve stem 44 is manipulated to screw the stem down against the check valve and force the gasket 35 tightly against the seat 37.

hen t is desired that the check valve shall operate freely the handwheel 48 is manipulated to screw the stem 44 upwardly and release the check valve 31. 32 as vertical flutes the liquid may flow when the gasket 35 is elevated.

Thus I have produced a combination check and cut-oft valve which may be manipulated to operate freely as a check valve when desired, and which may be manipulated to lock the check valve and make a positive cut-oif when desired.

arious changes may be made without parting from the spirit of my invention claimed.

I claim:

A combination check and cut-off valve including a casing provided with an inlet and an outlet, a partition in said casing between said inlet and said outlet, said partition being provided with an opening, a check valve including a threaded shank, a stem extend ing from one end of said shank, a head extending of said shank and slidably mounted in the opening in said partition, a bearing in said casing in which said stem is slidably mounted, said head being fluted to allow the through said opening when the check valve on said parand a plate screwing on said shank against said gasket, said bearing adapted to engage said plate to limit the opening movement of the valve, and a stem screw seated in said casing engaging the end of said stem to hold the valve positively closed.

In testimony whereof I name to this specification.

GEO. A. HIDDEN.

said opening,

have signed my 

